3. De acuerdo con los anteriores problemas.

A binomial event is one where there are 3 possible outcomes. A.True B.False

Marianna [84]

B. False

Bi = 2

Binomial = 2 possible outcomes

4 0

3 years ago

Hello !!! please help me <3 will give brainle and 25 points please help !!!!

Hitman42 [59]

answer: 375

Step-by-step explanation:

panda bear caps: 25

they ordered 100 in total

25/100 = 1/4, a quarter

then you find a quarter of 1500

1500/4= 375

4 0

2 years ago

A machine that produces a major part for an airplane engine is monitored closely. In the past, 10% of the parts produced would b

nata0808 [166]

Answer:

With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is of at least 216.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

For this problem, we have that:

$p = 0.1$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is

We need a sample size of at least n, in which n is found M = 0.04.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.04 = 1.96\sqrt{\frac{0.1*0.9}{n}}$

$0.04\sqrt{n} = 0.588$

$\sqrt{n} = \frac{0.588}{0.04}$

$\sqrt{n} = 14.7$

$(\sqrt{n})^{2} = (14.7)^{2}$

$n = 216$

With a .95 probability, the sample size that needs to be taken if the desired margin of error is .04 or less is of at least 216.

7 0

4 years ago

Please help me understand this question!!!

AfilCa [17]

Okay so. im not good at explaining. but ill try my best
you go with your basic X over Y soooo 2X you would go up 2 because its a positive number. and to the.. left 3 becuse it - if it was a + you would go to the right 3 but sense its -3y you go to the left
so fare your going to go from the -9 point on your graph up 2 over 3
and if its just Y ots over 1

i really hope this makes sence and helps

4 0

3 years ago

They hypotenuse of a right triangle is 26 feet long. One leg of the trisangle is 14 feet longer than the other leg find the leng

Elden [556K]

We have:
c = 26 ft - a hypotenusea - a lega + 14 - a leg
Use the Pythagorean theorem:
$a^2+(a+14)^2=26^2$
Use: (a + b)² = a² + 2ab + b²
$a^2+a^2+28a+196=676\ \ \ |-676\\\\2a^2+28a-480=0\ \ \ |:2\\\\a^2+14a-240=0\\\\a^2+24a-10a-240=0\\\\a(a+24)-10(a+24)=0\\\\(a+24)(a-10)=0\iff a+24=0\ \vee\ a-10=0\\\\a=-24 < 0\ \vee\ a=10$
Answer: 10 ft and 24 ft.

3 0

3 years ago